Time

» A Brief History of Time
   Early origins and historical perspectives of time measurement.

   
   http://www.perseus.tufts.edu/GreekScience/Students/Chris/TIME2.html

» A Few Facts Concerning GMT, UT, and the RGO
   Explains the differences between several time systems.

   
   http://www.apparent-wind.com/gmt-explained.html

» A History of Time
   Explains the importance of concept of time in the history of mathematics, science and measurement.

   
   http://www-history.mcs.st-andrews.ac.uk/HistTopics/Time_1.html

» A Walk Through Time
   Evolution of timekeeping through the centuries.

   
   http://physics.nist.gov/GenInt/Time/time.html

» Calendar Studies
   Information about calendar history and calendar reform.

   
   http://www.hermetic.ch/cal_stud.htm

» Calendar Zone
   A categorized collection of calendar related sites.

   
   http://www.calendarzone.com/

» English Calendar
   Includes an ecclesiastical calendar and a section on old and new style dating.

   
   http://www.albion.edu/english/calendar/

» Infoplease: Daylight Saving Time
   Information and history about Daylight Saving Time all over the world.

   
   http://www.infoplease.com/spot/daylight1.html

» International Standard Date and Time Notation
   An overview of the ISO 8601 notation for dates.

   
   http://www.cl.cam.ac.uk/~mgk25/iso-time.html

» Internet Encyclopedia of Philosophy: Time
   Time has been studied for thousands of years. Nevertheless, many issues remain to be resolved. This article explores both what is now known about time and what is controversial and unresolved.

   
   http://www.iep.utm.edu/t/time.htm

» NIST Time and Frequency Division
   The National Institute of Standards and Technology maintains time and frequency standards for the United States.

   
   http://tf.nist.gov/

» NPR : 'Seize the Daylight': A History of Clock Chaos
   Benjamin Franklin first called for the government to tinker with clock hours in the 1780s. But it wasn't until World War I that the United States adopted daylight-saving time as a way to get more efficiency out of the day. "Seize the Daylight"

   
   http://www.npr.org/templates/story/story.php?storyId=4572036

» The Calendar
   Summarizes the history of various calendars developed and used over the centuries.

   
   http://www.skeptics.com.au/journal/calendar.htm

» This Day In History
   Today in history every day - often with pictures and sound.

   
   http://www.history.com/this-day-in-history.do

» Time
   Provides descriptions of several standards of time.

   
   http://scienceworld.wolfram.com/astronomy/Time.html

» Time FAQ
   Frequently Asked Questions about time (from sci.astro news group)

   
   http://www.faqs.org/faqs/astronomy/faq/part3/

» Time Zone and Daylight Saving Time Data
   A directory of sites providing descriptions of civil timekeeping concepts, source code, databases, and maps.

   
   http://www.twinsun.com/tz/tz-link.htm

» Today's Calendar and Clock Page
   Information on all things relating to calendars, dates, holidays, and time. Find today's date on several different cultural and religious calendars. Includes section on Celestial data, countdown clocks, and information on the dates past events.

   
   http://www.ecben.net/calendar.shtml

» U.S. Time Zones
   History of standard time in the U.S.

   
   http://aa.usno.navy.mil/faq/docs/us_tzones

» United States Code
   Weights, measures and standard time.

   
   http://tycho.usno.navy.mil/260.html

» Wikipedia: Time
   Time is a common term for the experience of duration, and a fundamental quantity of measuring systems. Article explains time definitions, history of measurements, perceptions in religion, philosophy and science.

   
   http://en.wikipedia.org/wiki/Time

» Z-Time
   Article on the time at 0 degrees longitude. Covers the timezone origin, GMT, UTC, GCT, ZULU and JIG.

   
   http://www.maybeck.com/ztime/